Answer:
The function in C++ is as follows:
int itr, kount;
void printNumPattern(int num1,int num2){
if (num1 > 0 && itr == 0) {
cout<<num1<<" ";
kount++;
printNumPattern(num1 - num2, num2);
} else {
itr = 1;
if (kount >= 0) {
cout<<num1<<" ";
kount--;
if (kount < 0) {
exit(0);}
printNumPattern(num1 + num2, num2);}}
}
Explanation:
We start by declaring global variables itr and kount
int itr, kount;
The function is defined here
void printNumPattern(int num1,int num2){
If num1 and itr are greater than 0 , then
if (num1 > 0 && itr == 0) {
Output num1, followed by a space
cout<<num1<<" ";
Increment counter by 1
kount++;
Call the recursion
printNumPattern(num1 - num2, num2);
If otherwise
} else {
Set itr to 1
itr = 1;
If counter is 0 or positive
if (kount >= 0) {
Output num1, followed by a space
cout<<num1<<" ";
Decrease counter by 1
kount--;
If counter is negative
if (kount < 0) {
Exit function
exit(0);}
Call the recursion
printNumPattern(num1 + num2, num2);}}
}
